import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;

public class Test {
    public static void main(String[] args) {
        ServerSocket serverSocket=null;
        Socket socket=null;
        DataInputStream in=null;
        DataOutputStream out=null;
        String s="hello world";
        try {
            serverSocket =new ServerSocket(2011);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
        try {


        }catch (Exception e) {

        }
    }
}
